This massive monument honors the first human in space.

World's largest bell sits on the grounds of the Kremlin in Moscow.

A piece of public art commemorating the world's first Black professional footballer.

The world's oldest railway bridge in continuous use.

A 600-year-old mini shrine guarded by a sword-wielding knight hides in a crumbling cliff face.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

This strange moor has a song written about it, Bronze Age carvings, and an alien sighting.

On a site with a long military history, a 1980s shelter.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

Bohemian paradise covered in majestic forests.

A church of bones, decorated with 40,000 human skeletons.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

An ancient necropolis of magnificent tombs.

A decommissioned tube carriage within a London museum hosts a regular pop-up supper club.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

A little slice of Japan and its aesthetics in London's Holland Park.

The site of London’s first coffee house has been serving refreshments of one kind or another for 360 years.

A tongue-in-cheek arcade where the games are based on everyday life.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Hidden beneath the streets of London is a secret subway that only carried mail.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Where Agatha Christie mysteriously disappeared in 1926.

At 1,732 feet above sea level, this spectacularly isolated yet surprisingly bustling bar is the highest pub in Britain.